Hydraulic fracturing in the United States

From Wikipedia, the free encyclopedia - View original article

Jump to: navigation, search
Environmental Protection Agency illustration of the water cycle of hydraulic fracturing

Hydraulic fracturing in the United States began in 1949.[1] According to the Department of Energy (DOE), as of 2013 at least two million oil and gas wells in the US have been hydraulically fractured,[2] and that currently about 95% of completed oil and gas wells in the US are being hydraulically fractured. Hydraulically fractured wells make up 43% of the oil and 67% of the natural gas production in the United States.[3] Environmental safety and health concerns about hydraulic fracturing emerged in the 1980s, and are still being debated at the state and federal levels.[4][5][6]


Non-hydraulic fracturing[edit]

Fracturing as a method to stimulate shallow, hard rock oil wells dates back to the 1860s. It was applied by oil producers in Pennsylvania, New York, Kentucky, and West Virginia by using liquid and later also solidified nitroglycerin. Later, the same method was applied to water and natural gas wells.[1] The idea to use acid as a nonexplosive fluid for well stimulation was introduced in the 1930s. Due to acid etching, fractures would not close completely and therefore productivity was enhanced. The same phenomenon was discovered with water injection and squeeze cementing operations.[1]

Hydraulic fracturing in quarrying[edit]

The first industrial use of hydraulic fracturing was as early as 1903, according to T.L. Watson.[7] Before that date, hydraulic fracturing was used at Mt. Airy Quarry, near Mt Airy, North Carolina where it was (and still is) used to separate granite blocks from bedrock.[citation needed]

Hydraulic fracturing in oil and gas wells[edit]

The relationship between well performance and treatment pressures was studied by Floyd Farris of Stanolind Oil and Gas Corporation. This study became a basis of the first hydraulic fracturing experiment, which was conducted in 1947 at the Hugoton gas field in Grant County of southwestern Kansas by Stanolind.[1][8] For the well treatment 1,000 US gallons (3,800 l; 830 imp gal) of gelled gasoline and sand from the Arkansas River was injected into the gas-producing limestone formation at 2,400 feet (730 m). The experiment was not very successful as deliverability of the well did not change appreciably. The process was further described by J.B. Clark of Stanolind in his paper published in 1948. A patent on this process was issued in 1949 and an exclusive license was granted to the Halliburton Oil Well Cementing Company. On March 17, 1949, Halliburton performed the first two commercial hydraulic fracturing treatments in Stephens County, Oklahoma, and Archer County, Texas.[1] The practice caught on quickly, and in 1965, a US Bureau of Mines publication wrote of hydraulic fracturing: "Many fields are in existence today because of these fracturing techniques for, without them, many producing horizons would have been bypassed in the past 15 years as either barren or commercially nonproductive."[9]

Hydraulic fracturing has been used to stimulate more than a million oil and gas wells.[10]

Massive hydraulic fracturing[edit]

Tight non-shale gas plays using massive hydraulic fracturing

Pan American Petroleum applied the first massive hydraulic fracturing (also known as high-volume hydraulic fracturing) treatment in the non-communist world to a well in Stephens County, Oklahoma in 1968. The treatment injected half a million pounds of proppant into the rock formation.[1] The definition of massive hydraulic fracturing varies somewhat, but is generally used for treatments injecting greater than about 150 mt, or 300,000 pounds of proppant.[11]

In the 1960s, American geologists became increasingly aware that there were huge volumes of gas-saturated rocks with permeability too low (generally less than 0.1 millidarcy) to recover the gas economically. The US government experimented with using underground nuclear explosions to fracture the rock and enable gas recovery from the rock. Such explosions were tried in the San Juan Basin of New Mexico (Project Gasbuggy, 1967), and the Piceance Basin of Western Colorado (Project Rulison, 1969, and Project Rio Blanco, 1973) but the results were disappointing, and the tests were halted. The petroleum industry turned to the new massive hydraulic fracturing technique as the way to recover tight gas.[11]

In 1973, Amoco introduced massive hydraulic fracturing to the Wattenberg Gas Field of the Denver Basin of Colorado, to recover gas from the low-permeability J Sandstone. Before massive hydraulic fracturing, the Wattenberg field was uneconomic. Injected volumes of 132,000 or more gallons, and 200,000 or more pounds of sand proppant, succeeded in recovering much greater volumes of gas than had been previously possible.[12] In 1974, Amoco performed the first million-pound frac job, injecting more than a million pounds of proppant into the J Sand of a well in Wattenberg Field.[13]

The success of massive hydraulic fracturing in the Wattenberg Field of Colorado was followed in the late 1970s by its use in gas wells drilled to tight sandstones of the Mesaverde Group of the Piceance Basin of western Colorado.[14]

Starting in the 1970s. thousands of tight-sandstone gas wells in the US were stimulated by massive hydraulic fracturing. Examples of areas made economic by the technology include the Clinton-Medina Sandstone play in Ohio, Pennsylvania, and New York; the San Juan Basin in New Mexico and Colorado; numerous fields in the Green River Basin of Wyoming; and the Cotton Valley Sandstone trend of Louisiana and Texas.[11]

Hydraulic fracturing in coalbed methane wells[edit]

Coalbed methane wells, which first began to be drilled in the 1980s, are commonly hydraulicly fractured to increase the flow rates to the well. Hydraulic fracturing is commonly used in some coalbed methane areas, such as the Black Warrior Basin and the Raton Basin, but not in others, such as the Powder River Basin, depending on the local geology. Injected volumes tend to be much smaller than those of either tight gas wells or shale gas wells; a 2004 EPA study found a median injected volume of 57,500 US gallons (218,000 l; 47,900 imp gal) for coalbed methane wells.[15]

Massive hydraulic fracturing in horizontal wells[edit]

Horizontal oil or gas wells were unusual until the 1980s. Then in the late 1980s, operators along the Texas Gulf Coast began completing thousands of oil wells by drilling horizontally in the Austin Chalk, and giving massive slickwater hydraulic fracturing treatments to the wellbores. Horizontal wells proved much more effective than vertical wells in producing oil from the tight chalk.[16]

Hydraulic fracturing in shales[edit]

A hydraulic fracturing operation at a Marcellus Shale well

In 1976 the United States government started the Eastern Gas Shales Project, a set of dozens of public-private hydro-fracturing pilot demonstration projects.[3] During the same period, the Gas Research Institute, a gas industry research consortium, received approval for research and funding from the Federal Energy Regulatory Commission.[17]

In 1997, based on earlier techniques used by Union Pacific Resources, now part of Anadarko Petroleum Corporation, Mitchell Energy, now part of Devon Energy, developed the hydraulic fracturing technique known as "slickwater fracturing" that made shale gas extraction economical in the Barnett Shale of north Texas. The technique was copied and adapted to other shales in the US.[18][19][20]

Between 2005 and 2010 the shale-gas industry in the United States grew by 45% a year. As a proportion of the country's overall gas production, shale gas increased from 4% in 2005 to 24% in 2012.[21]

According to oilfield services company Halliburton, as of 2013 more than 1.1 million hydraulic fracturing jobs have been done in the United States (some wells are hydraulically fractured more than once), and almost 90% of new US onshore oil and gas wells are hydraulically fractured.[22]

Typical process for drilling a well[edit]

First step in the process is to identify prospective gas reserves in the ground and obtaining required permits for gas well construction.[23] These permits are regulated by state agencies and requirements to qualify for the permit vary from state to state. Once the permit is obtained, a company proceeds with preparing the surface at the well site. This usually involves a 4-5 acre area that is cleared to setup stage bed, waste water site and temporary gas storage facility. Next step in the process is the drilling and casing of the well. In this process, a bore machine drills vertically in the ground while adding steel casings every few feet in a reverse telescope manner. The bore well process is very similar to bore well process for constructing water wells.[24] The casing helps keep the well open by providing structural support as well as prevent fluid and gas flow into the surrounding ground. Once the casing is in place, cement is pumped down inside the casing and back up on the outside of the casing. This is done to cement the casing in the formation as well as to prevent any leakage or flow of the gas and fluids behind the casing. This is one of the most critical steps involved with designing an environmentally safe and efficient gas well.[25]

Economic impact[edit]

Oil and gas supply[edit]

The US Energy Information Administration projects a rise in US oil production due to hydraulically fractured wells in tight oil formations such as the Bakken Formation and Eagle Ford Formation.
The US Energy Information Administration projects a rise in US gas production through 2040 due to hydraulically fractured wells in tight gas and shale gas formations.

Gas production from tight sandstone reservoirs made up 26 percent of US gas production in 2010. Production from shales made up another 23 percent of US gas production, so that massive hydraulic fracturing made possible 49 percent of US gas production in 2010.[26] Increased US production resulted in decreased natural gas imports: in 2012, the US imported 32% less natural gas than it had in in 2007.[27] In 2013, the US Energy Information Administration projected that imports will continue to shrink due to increases in tight gas and shale gas, and the US will become a net exporter of natural gas some time around 2020.[28]

Increased US oil production from hydraulically fractured tight oil wells was mostly responsible for the decrease in US oil imports since 2005 (decreased oil consumption was also an important component). The US imported 52% of its oil in 2011, down from 65% in 2005.[29] Hydraulically fractured wells in the Bakken, Eagle Ford, and other tight oil targets, enabled US crude oil production to rise in September 2013 to the highest output since 1989.[30]

Proponents of hydraulic fracturing touted its potential to make the United States the world's largest oil producer and make it an energy leader,[31] a feat it achieved in November 2012 having already surpassed Russia as the world's leading gas producer.[32] Proponents say that hydraulic fracturing would give the United States energy independence.[33] In 2012, the International Energy Agency projected that the United States, now the world's third-largest oil producer behind Saudi Arabia and Russia, will see such an increase in oil from shales that the US will become the world's top oil producer by 2020.[34] In 2011 the US became the world's leading producer of natural gas when it outproduced Russia. In October 2013, The US Energy Information Administration projected that the US had surpassed Saudi Arabia to become the world's leading oil producer as well.[35]

Globally, gas use is expected to rise by more than 50% compared to 2010 levels, and account for over 25% of world energy demand in 2035.[36] Anticipated demand and higher prices abroad have motivated non-US companies to buy shares and invest in US gas and oil companies,[37][38] and in the case of the Norwegian company Statoil, to buy an American company with hydraulic fracturing expertise and US shale oil production.[39]

Some geologists say that the well productivity estimates are inflated and minimize the impact of the reduced productivity of wells after the first year or two.[40] A June 2011 New York Times investigation of industrial emails and internal documents found that the profitability of unconventional shale gas extraction may be less than previously thought, due to companies intentionally overstating the productivity of their wells and the size of their reserves. The same article said, "Many people within the industry remain confident." T. Boone Pickens said that he was not worried about shale companies and that be believed they would make good money if prices rise. Pickens also said that technological advances, such as the repeated hydrofracking of wells, was making production cheaper. Companies that specialize in shale gas have diversified into lucrative products such as propane and butane.[41][42]

Gas price[edit]

Comparison of natural gas prices in Japan, United Kingdom, and United States, 2007-2011

According to the World Bank, as of November 2012, the increased gas production due to horizontal drilling and hydraulic fracturing in the US had driven US gas prices down to less than one-third of natural gas prices in Europe, and to one-fifth of natural gas prices in Japan.[43] Lower natural gas prices in the US have encouraged the replacement of coal- with gas-fired power plants, but have also discouraged the switch to renewable sources of energy.[44] Facing a supply glut and consequent further price drops in 2012, some large US gas producers announced plans to cut natural gas production; however, production rates rose to all-time highs, and natural gas prices remained near ten-year lows.[45]

Companies have sought and received permission from the DOE[46] to export gas to Europe and Asia (e.g., China and Korea),[47] They have asked for permission to build a new pipeline through Pennsylvania and Maryland[48][49][50][51] to transport liquid natural gas (LNG) to new export terminals in Maryland to facilitate the export of natural gas and oil.[47] Possible terminal locations include Sparrow's Point, (Baltimore)[52] and Lusby,[46] Maryland.[47]

Oil and natural gas companies have recently sought to build a new pipeline through Pennsylvania and Maryland[48] to new liquid natural gas export terminals in Maryland,[47] in order to increase profits by exporting gas to Europe and Asia. Critics have charged that such a move could threaten the national energy security provided by gas from hydraulically fractured shale gas wells.[47]


Economic effects of hydraulic fracturing include an increase in jobs, and an increase in business. The Environmental Protection Agency (EPA) states that it is unclear on a local level how and for how long hydraulic fracturing affects a community economically. It is hypothesized that hydraulic fracturing may not provide jobs to local communities due to the specialized nature of hydraulic fracturing tasks. Also, communities’ local resources could potentially be taxed due to the increase in industry traffic or if an accident occurs.[53]

Property owners[edit]

Economic effects of hydraulic fracturing include payments to property owners. Concerns have also been raised regarding the terms and clarity of the leases energy companies are signing with landowners, as well as the manner in which they are sold and the tactics used by companies in implementing them.[54]

Another question has been the effect the leases can have on mortgages, with some lenders becoming reluctant to loan money "for a piece of land that ends up storing the equivalent of an Olympic-size swimming pool filled with toxic wastewater from drilling" or making mortgages conditional on not signing a drilling contract.[55][56]

Nationwide Insurance has issued a statement that its policies do not cover hydraulic fracturing related damage. The company said that it issued the memo because their research led them to decide that the financial exposure created by such coverage was too great. The company will not cover damages to land involved in hydraulic fracturing operations, damages resulting from hauling water, pipe, and lumber to and from drill sites, and damages resulting from the use of bulldozers, dump trucks and other vehicles used in conjunction with hydraulic fracturing.[57] Company representatives said that they have historically not insured the oil and gas business, but added that they were uncomfortable with hydraulic fracturing's unique risks and could not provide coverage at a reasonable price.[58] Jeffrey Hanneman, the director of environmental practice for Aon Risk Solutions, said the decision would be unlikely to signal a wider trend. Hanneman said that while some insurance companies have been reluctant to offer coverage to tracking and related activities, there have been no substantial claims except for rare claims against companies owning or operating wells. Mike Elmendorf, head of the Associated General Contractors of New York State said that AGCNY members did not welcome Nationwide's decision, and that it was hard to understand, anti-job creation, and had no factual basis. Simon Lomax, the research director for Energy In Depth, a petroleum industry group, has called the decision reckless and uninformed.[57]

Water use[edit]

Massive hydraulic fracturing uses millions of gallons of water per treatment, raising concerns of creating or aggravating water shortages.

Environmental and health impact[edit]

Schematic depiction of hydraulic fracturing for shale gas, showing potential environmental effects.

There are environmental concerns, including contamination of ground water, risks to air quality, the potential migration of gases and hydraulic fracturing chemicals to the surface, the potential mishandling of waste, and the health effects of these, like cancer.[63][64] There is already evidence of environmental contamination,[65][66][67][68] and it has been predicted that exposure to chemicals in hydraulic fracturing fluid will increase as gas wells using this technology proliferate.[64] Gas drilling companies are reluctant to reveal the proprietary substances in the fluid.[69] There are concerns that information about negative impacts are being suppressed by state governments.[4] The list of additives for hydraulic fracturing includes kerosene, benzene, tolulene, xylene, and formaldehyde.[70]

In April 2011, the Ground Water Protection Council launched FracFocus.org, an online voluntary disclosure database for hydraulic fracturing fluids. The site is funded by oil and gas trade groups and the DOE. The site has been met with some skepticism[71] relating to proprietary information that is not included, although President Obama's energy and climate adviser Heather Zichal has said of the database: “As an administration, we believe that FracFocus is an important tool that provides transparency to the American people.” [72] At least five states – including Colorado [73] and Texas – have mandated fluid disclosure [74] and incorporated FracFocus as the tool for disclosure. As of March 2013, FracFocus had more than 40,000 searchable well records on its site.

The FracTracker Alliance, a non-profit organization, provides oil and gas-related data storage, analyses, and online and customized maps related to hydraulic fracturing. Their web site, FracTracker.org, also includes a photo library and resource directory. [75][76]

Geisinger Health System, a physician-led health care system, serves 2.6 million patients who live in the Pennsylvania towns in the Marcellus natural gas trend, where hydraulic fracturing is occurring.[77] Geisinger is conducting a study of the health impact of hydraulic fracturing using its database to examine links between drilling and health by dates and locations, as well as identify control populations.[77]

EPA hydraulic fracturing study[edit]

In 2010 Congress requested that the EPA undertake a new, broader study of hydraulic fracturing. The report is slated for release in 2012.[78] The purpose of the EPA study regarding Hydraulic Fracturing is to examine the effects of hydraulic fracturing on the water supply, specifically for human consumption. The research aims to examine the full scope of the water pathway as it moves through the hydraulic fracturing process, including water that is used for the construction of the wells, the fracturing mixture, and subsequent removal and disposal. Fundamental research questions include:[79]

The Scientific Advisory Board reviewed the study plan in early March 2011. In June 2011, the EPA announced the locations of its five retrospective case studies, which will examine existing hydrofracking sites for evidence of drinking water contamination. They are:[80]

Dr. Robin Ikeda, Deputy Director of Noncommunicable Diseases, Injury and Environmental Health at the CDC noted that none of the following EPA investigation sites were included in the final version of EPA’s Study of the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources: Dimock, Pennsylvania; LeRoy, Pennsylvania; Pavillion, Wyoming; Medina, Ohio; Garfield County, Colorado.[81]

Research should be completed by the end of 2012, and the EPA's Hydraulic Fracturing Report is expected to be completed in 2014.

Industry forces applied pressure to exclude the study of tracer isotopes from the study.[82] The study's Science Advisory Board advised the EPA to delete proposed toxicity tests from the study scope, due to limited time and funds.[83] However, some members of the Science Advisory Board (SAB) urged the SAB to advise the EPA to reinstate the toxicity testing of frack chemicals.[82] Chesapeake Energy agreed,[84] stating “an in-depth study of toxicity, the development of new analytical methods and tracers are not practical given the budget and schedule limitation of the study.”[82] Thus, despite concerns about the elevated levels of iodine-131 (a radioactive tracer used in hydraulic fracturing) in drinking water in Philadelphia and Pittsburgh, downstream from hydraulic fracturing sites,[85][86][87][88] iodine-131 is not listed among the chemicals to be monitored in the draft plan for the study. Other known radioactive tracers used in hydraulic fracturing[89][90][91] but not listed as chemicals to be studied include isotopes of gold, xenon, rubidium, iridium, scandium, and krypton.[92]

The EPA Hydraulic Fracturing Draft Study Plan can be found here.[93]

Groundwater quality studies[edit]

Jackson County, West Virginia, 1987[edit]

In 1987, an EPA's report was published that indicated fracture fluid invasion into a well in West Virginia. The well, drilled by Kaiser Exploration and Mining Company, was found to have induced fractures that allowed fracture fluid to contaminate groundwater. The American Petroleum Institute agreed that hydraulic fracturing had caused the drinking water contamination, and the EPA held it up as an example of the hazards created by the technique.[5][94]

EPA, 2004[edit]

A 2004 EPA study on hydraulic fracturing in coalbed methane wells concluded that the process was safe in such cases, and didn't warrant further study, because there was "no unequivocal evidence" of health risks to groundwater, and the fluids were neither necessarily hazardous nor able to travel far underground.[95] The EPA report did find uncertainties in knowledge of how fracturing fluid migrates through rocks, and recommended that diesel fuel not be used as a component of fracturing fluid in coalbed methane walls due to its potential as a source of benzene contamination; in response, well service companies agreed to stop using diesel fuel in coalbed methane wells.[96] One of the authors of the 2004 EPA report noted that it studied only hydraulic fracturing in coalbed methane wells.[95]

Dimock Township, Pennsylvania, 2009[edit]

An investigation was initiated after a Pennsylvania water well exploded on New Year's Day in 2009. The state investigation revealed that Cabot Oil & Gas Company "had allowed combustible gas to escape into the region's groundwater supplies."[97][98] Arsenic, barium, DEHP, glycol compounds, manganese, phenol, methane, and sodium were found in unacceptable levels in the wells.[99] In April 2010, the state of Pennsylvania banned Cabot Oil & Gas Corp. from further drilling in the entire state until it plugs wells believed to be the source of contamination of the drinking water of 14 homes in Dimock Township, Pennsylvania.[100] Cabot Oil & Gas was also required to financially compensate residents and provide alternative sources of water until mitigation systems were installed in affected wells.[99]

Pavillion, Wyoming, 2012[edit]

Complaints about water quality from residents near a gas field in Pavillion, Wyoming prompted an EPA groundwater investigation, which reported detections of methane and other chemicals, some used or produced in fracking, and some at dangerous levels.[101] A draft report stated that the impact to ground water could be explained by fracking.[102][103] The report said that ground water contamination of the nature found in Pavilion is "typically infeasible or too expensive to remediate or restore (GAO 1989)."[102]

In 2012 the U.S. Geological Survey tested one of two EPA monitoring wells near Pavillion, Wyoming, and found evidence of methane, ethane, diesel compounds and phenol, which the EPA had also identified in its 2011 report.[104] Rob Jackson, an environmental scientist at Duke University, described the methane, ethane, and propane concentrations as very high, consistent with fossil fuel rather than natural sources.[105] In 2012, the EPA retested water in Pavilion, and briefed the homeowners, but has not yet released the results to the public. Pavilion resident John Fenton reported that the EPA told him the recent test results were consistent with previous results, and that the EPA recommended that they don't cook with or drink their water.[105]

In June 2013, the EPA announced that it was closing its investigation at Pavilion, and would not finish or seek peer review of its preliminary 2011 study. Further investigation will be done by the state of Wyoming.[106]

A 2011 study by Congressional Democrats found that, in the process of hydraulic fracturing, "oil and gas companies injected hundreds of millions of gallons of hazardous or carcinogenic chemicals into wells in more than 13 states from 2005 to 2009," according to the New York Times.[107] The Congressional study had identified 750 different chemicals in that fluid; 29 of which are considered to be known or possible hazards or carcinogens.[108] A 2011 investigation by the New York Times based on various leaked EPA documents found that hydraulic fracturing had resulted in significant increases of radioactive material including radium and carcinogens including benzene in major rivers and watersheds.[109] At one site the amount of benzene discharged into the Allegheny River after treatment was 28 times accepted levels for drinking water.[107]

A study published in May 2011 by researchers at Duke University found that "levels of flammable methane gas in drinking water wells increased to dangerous levels when those water supplies were close to natural gas wells." Water samples from 68 private water wells in the states of Pennsylvania and New York were tested and some were found to have extremely high concentrations of methane: 64 milligrams of methane per liter of drinking water, compared with a normal level of one milligram or lower. The study found that, on average, methane concentrations 17 times above normal in samples taken from water wells near shale gas drilling sites employing hydraulic fracturing. According to one of the authors of the study, "That sort of concentration is up at a level where people worry about an explosion hazard."[110][111] The average concentration of methane in the water wells near drilling sites lies within a range that, according to the Department of the Interior, is dangerous and requires urgent "hazard mitigation" action.[110][112] They found that the type of gas detected at high levels in the water was the same type of gas that energy companies were extracting from thousands of feet underground, strongly implying that the gas may be seeping underground through natural or man-made faults and fractures, or coming from cracks in the well structure itself ".[113] The study concluded that fracking has seriously contaminated shallow groundwater supplies in northeast Pennsylvania with flammable methane. The study does not discuss how pervasive such contamination might be in other areas where drilling for shale gas has taken place.[114] Though the study found thermogenic groundwater methane concentrations were higher near active drilling sites compared to neighboring nonextracting sites, no traces of hydraulic fracturing fluids were detected in any of the analyzed groundwater samples.[110]

According to a study performed by a lecturer at the State University of New York, Oneonta, nearly two percent of fracked gas wells have the potential to cause groundwater contamination.[115]

Colorado School of Public Health (Garfield county, Colorado) released a second draft report of the Battlement Mesa Health Impact Assessment on March 1, 2011 for public comment.[116]

In May 2011 the University of Michigan-Ann Arbor began studying the effects of natural gas fracking on the Great Lakes.[117]

An article by Tom Myers, a researcher from Reno, Nevada, in the journal Ground Water[118] reported that hydraulic fracturing fluids under pressure can migrate upward through available crevices and reach shallow drinking-water aquifers in as little as three years. Myers is an independent consultant who has worked for conservation groups and governments. Myers was hired by Catskill Mountainkeeper, a New York-based environmental group that opposes fracking, and The Park Foundation in Ithaca, which offers a variety of grants. Terry Engelder, professor of geosciences at The Pennsylvania State University in University Park, said that the computer models used by Myers contain errors.[119]

A 2008 investigation of benzene contamination in Colorado and Wyoming led some EPA officials to suggest hydraulic fracturing as a culprit.[citation needed]

Environmental group Riverkeeper presented a report to the EPA of over 100 cases of contamination.[120] It has published a report of various environmental impacts using reports from federal and state regulators.[121]

Well blowouts and spills of fracturing fluids[edit]

A well blowout in Clearfield County, Pennsylvania on June 3, 2010, sent more than 35,000 gallons of hydraulic fracturing fluids into the air and onto the surrounding landscape in a forested area. Campers were evacuated and the company EOG Resources and the well completion company C.C. Forbes were ordered to cease all operations in the state of Pennsylvania pending investigation. The Pennsylvania Department of Environmental Protection called it a "serious incident".[122][123]

Natural gas drilling and seismic events[edit]

Injection of fluid into subsurface geological structures, such as faults and fractures, reduces the effective normal stress acting across these structures. If sufficient shear stress is present, the structure may slip in shear and generate seismic events over a range of magnitudes; natural gas drilling may have caused earthquakes in North Texas.[124] Subsidence is not directly caused by hydraulic fracturing but may occur after considerable production of oil or ground water. Subsidence occurs over reservoirs whether they have been subject to hydraulic fracturing or not because it is a result of producing fluids from the reservoir and lowering the reservoir pore pressure. The subsidence process can be associated with some seismicity. Reports of minor tremors of no greater than 2.8 on the Richter scale were reported on June 2, 2009 in Cleburne, Texas, the first in the town's 140-year history.[125]

Fracking connected to deep well waste water disposal has been banned in Arkansas due to the risk of contaminating aquifers if the earthquakes it induced continued.[126] The U.S. Geological Survey is working on ways to head off quakes from wastewater wells.[127]

Air and health[edit]

Many particulates and chemicals can be released into the atmosphere during the process of hydraulic fracturing, such as sulfuric oxide, nitrous oxides, volatile organic compounds (VOC), benzene, toluene, diesel fuel, hydrogen sulfide which can have serious health implications. A study conducted between August 2011 and July 2012 as part of Earthworks’ Oil & Gas Accountability Project (OGAP) found chemical contaminants in the air and water of rural communities affected by the Shale extraction process in central New York and Pennsylvania. The study found disproportionately high numbers of adverse health effects in children and adults in those communities.[128]

A potential hazard that is commonly overlooked is the venting of bulk sand silos directly to atmosphere. When they are being filled, or emptied during the fracture job, a fine cloud of silica particulate will be vented directly into atmosphere. This dust has the potential to travel many kilometers on the wind directly into populated areas. While the immediate personnel are wearing personal protective equipment, other people in the area of a well fracture can potentially be exposed.[129]

A 2012 study out of Cornell's College of Veterinary Medicine by Robert Oswald, a professor of molecular medicine at Cornell's College of Veterinary Medicine, and veterinarian Michelle Bamberger, DVM, soon to be published in 'New Solutions: A Journal of Environmental and Occupational Health Policy,' suggests that hydraulic fracking is sickening and killing cows, horses, goats, llamas, chickens, dogs, cats, fish and other wildlife, as well as humans. The study covered cases in Colorado, Louisiana, New York, Ohio, Pennsylvania and Texas.[69] The case studies include reports of sick animals, stunted growth, and dead animals after exposure to hydraulic fracturing spills from dumping of the fluid into streams and from workers slitting the lining of a wastewater impoundment (evaporation ponds) so that it would drain and be able to accept more waste. The researchers stated that it was difficult to assess health impact because of the industry's strategic lobbying efforts that resulted in legislation allowing them to keep the proprietary chemicals in the fluid secret, protecting them from being held legally responsible for contamination. Bamberger stated that if you don't know what chemicals are, you can't conduct pre-drilling tests and establish a baseline to prove that chemicals found postdrilling are from hydraulic fracturing.[69] The researchers recommended requiring disclosure of all hydraulic fracturing fluids, that nondisclosure agreements not be allowed when public health is at risk, testing animals raised near hydraulic fracturing sites and animal products (milk, cheese, etc.) from animal raised near hydraulic fracturing sites prior to selling them to market, monitoring of water, soil and air more closely, and testing the air, water, soil and animals prior to drilling and at regular intervals thereafter.[69]

CNN has reported flammable tap water in homes located near hydrofracking sites in Portage County, Ohio.[130] On October 18, 2013 the Ohio Department of Natural Resource-Division of Oil & Gas Resources Management found that the Kline's pre-drilling water sample showed methane was present in August 2012 before gas wells were drilled near their home. The report further states the gas was microbial in origin and not thermogenic like gas produced from gas wells.[131] Research done by the ODNR found documentation of natural gas and crude oil being encountered in the aquifers of Nelson and Windham Townships of Portage County, Ohio.<[131]

Workplace safety[edit]

The EPA states in their Hydraulic Fracturing Study Plan (2011) that the exposure to hydraulic fracturing chemicals in an occupational setting needs to be examined to determine the acute and chronic effects on health. The exposure risks such as “transport, mixing, delivery, and potential accidents” have not been properly assessed (p. 57).[53]

A study by National Institute for Occupational Safety and Health, concluded that an inhalation health hazard existed for workers exposed to crystalline silica (sand dust) at the evaluated hydraulic fracturing sites. NIOSH notified company representatives of these findings and provided reports with recommendations to control exposure to crystalline silica. NIOSH recommended that all hydraulic fracturing sites evaluate their operations to determine the potential for worker exposure to crystalline silica and implement controls as necessary to protect workers.[132] Hydraulic fracturing also affects individuals in close proximity to the activity, like the case previously discussed about the nurse who became ill after exposure from treating a hydraulic fracturing worker (Frankowski, 2008).[53][133]

A 2012 OSH article outlined the risk of worker radiation exposure.[134]


In September 2010, a lawsuit was filed in Pennsylvania alleging that Southwestern Energy Company contaminated aquifers through a defective cement casing in the well.[120] In June 2011, Northeast Natural Energy sued the town of Morgantown, West Virginia, for its ban on hydraulic fracturing in the Marcellus Shale within a mile of the town's borders. The ban had been initiated to protect the municipal water supply as well as the town's inhabitants, in the absence at the state level of regulations specific to hydraulic fracturing.[135] There have been other cases as well. After court cases concerning contamination from hydraulic fracturing are settled, the documents are sealed, and information regarding contamination is not available to researchers or the general public. While the American Petroleum Institute deny that this practice has hidden problems with gas drilling, others believe it has and could lead to unnecessary risks to public safety and health.[5]


The amount of proposed regulatory legislation related to hydraulic fracturing has dramatically increased within state legislatures since 2005. This is in part due to the fact hydraulic fracturing has started in areas in which residents are unfamiliar with natural gas operations. The majority of the proposed bills specifically address one aspect of natural gas drilling, for example wastewater treatment, though some are more comprehensive and consider multiple regulatory concerns.[136]

The EPA has the power to issue permits for drilling and underground injection, and to set regulations for the treatment of waste at the federal level. States are required to comply with federal law and the regulations set by the EPA. States, however, have the power to regulate the activities of certain companies and industries within their borders - they can create safety plans and standards, management and disposal regulations, and public notice and disclosure requirements. Additionally, states can allocate or withdraw power from local governments in decision-making. Land-use ordinances, production standards, and safety regulations can be set by local governments, however state law determines the extent of authority that municipalities may exercise, including the extent to which they may enact ordinances or regulations regarding gas drilling.[137]

The EPA partners with state governments to oversee their regulations at the state level. The EPA has limited powers in both creating and regulating hydraulic fracturing laws and policies, and so hydraulic fracturing facilities (as well as the oil companies that own them) and state legislators have a considerable amount of power, including the power to sue the EPA over regulation infractions, to halt or allow drilling, and to decide what permits or notifications are necessary.[137] Additionally, trade secret provisions and other exemptions exist that preclude companies from disclosing the exact chemical content of their fluids.[138] State regulations can regulate industries in their state, and local governments can even have the power to authorize their activities. However, state law trumps local regulation; Pennsylvania’s Act 13 is an example of how state law can prohibit local regulations of hydraulic fracturing industries. Additionally the presence of abandoned or undocumented wells and hydraulic fracturing sites, regulatory loopholes in EPA and state policies, and inevitable limitations to the enforcement of these laws can pose big challenges.[138] The regulation and implementation process of hydraulic fracturing is a complex process involving many groups, stakeholders, and impacts.

Federal versus state regulation debate[edit]

There is discussion regarding whether control of hydraulic fracturing should be at the state or federal level.[139][140] Advocates of state level control of energy sources (e.g., oil, gas, wind and solar), argue that a state approach allows each state to create regulations and review processes that fit the states' particular geology, ecology and citizen concerns.[140] Critics say that this would create a patchwork of inconsistent regulations.[139] They also note that the components and consequences of energy development (e.g., emissions, commerce, wastewater, earthquakes, and radiation) may cross states lines, and argue that regulations need to consider the overall impact on all states. This would require regulation at the federal level. Local and state governments may also lack resources to initiate and defend against corporate legal action related to hydraulic fracturing.[141][142]

Those supporting federal regulation think that it will provide more consistent, uniform standards.[139] They say that there is a need for national environment and public health standards, including those related to water and air pollution (e.g., public disclosure of chemicals used in hydraulic fracturing, protection of drinking water sources, and control of air pollutants).[139][140] A compromise approach called, "cooperative federalism" has been proposed for hydraulic fracturing. This approach has been used for coal since 1977. In this approach, the federal government sets baseline standards rather than detailed specifications, which allows states more flexibility in how they meet the standards. It would require the government to remove the regulatory exemptions for hydraulic fracturing (e.g., the Energy Policy Act of 2005, which exempted oil and gas producers from certain requirements of the Safe Drinking Water Act), and develop a comprehensive set of regulations for the industry.[139]

The EPA and the industry group the American Petroleum Institute each provided grants to fund the organization State Review of Oil and Gas Environmental Regulations (STRONGER), to promote better state oversight of oil and gas environmental issues. The organization, at the invitation of various states, reviews their oil and gas environmental regulations in general, and hydraulic fracturing regulations in particular, and recommends improvements. As of 2013, STRONGER has reviewed hydraulic fracturing regulations in six states: Arkansas, Colorado, Louisiana, Ohio, Oklahoma, and Pennsylvania (reviews available on the STRONGER website).[143]

The state level of regulation sets a lower standard of regulation in terms of environmental issues than the federal one for different reasons. Firstly, states only have legislative power over their territory so the potential area affected by regulation is smaller than the federal one. Related to that, we can note that the EPA has power over cross-state resources such as rivers, thus a bigger regulative power. Secondly, environmental issues at the scale of states are usually related to energetic and economic issues through energy administrations, leaving the environmental impact behind economic considerations whereas the EPA's unique mandate concerns environmental issues, regardless of their economic or energetic aspect, since it is more independent from energy administrations.[144] State regulations are therefore considered to be weaker than federal ones. Thirdly, state-level policies are more subject to majority changes and lobbying whereas federal agencies work independently from Congress and thus deliver more continuity in terms of policy-making.[144]

The academic literature has increasingly stressed the opposite regulatory agendas of natural gas advocates and environmentalists.[144] Environmentalists and the supporters of a precautionary approach have advocated federal and powerful inter-state regulation as well as democratic empowerment of local communities. They have therefore supported inter-state organizations that gather state and federal actors such as the Delaware River Basin Commission when “natural gas policy” ones did not include federal actors. However, natural gas advocates have backed state-level and weak inter-state regulations and the withdrawal of regulatory powers such as zoning from local communities and institutions. They have only admitted a support to certain interstate organizations, but to the ones that pledge for weak regulations and which do not include heavy regulatory powers such as the Interstate Oil and Gas Compact Commission.[144] Additionally, proponents of state over federal regulation argue that states, with local and historical knowledge of their unique landscapes, are better able to create effective policy than any standardized federal mandate. Congress as well as industry leaders have had an impact on the regulatory exemptions of hydraulic fracturing and continue to be the dominant voice in determining regulation in the United States.


Hydraulic fracturing has known impacts on the environment and potential unknown direct or indirect impacts on the environment and human health. It is therefore part of the EPA's area of regulation. The EPA assures surveillance of the issuance of drilling permits when hydraulic fracturing companies employ diesel fuel. This is its main regulatory activity but it has been importantly reduced in its scope by the Energy Policy Act of 2005 that excluded hydraulic fracturing from the Safe Drinking Water Act’s Underground Injection Control’s regulation, except when diesel is used.[145] This has raised concerns about the efficiency of permit issuance control. In addition to this mission, the EPA works with states to provide safe disposal of wastewater from hydraulic fracturing, has partnerships with other administrations and companies to reduce the air emissions from hydraulic fracturing, particularly from methane employed in the process, and tries to ensure both compliance to regulatory standards and transparency for all stakeholders implied in the implementation process of hydraulic fracturing.

On August 7, 1997, the Eleventh Circuit Court ordered the United States Environmental Protection Agency to reevaluate its stance on hydraulic fracturing based on a lawsuit brought by the Legal Environmental Assistance Foundation. Up until that decision, the EPA deemed that hydraulic fracturing did not fall under the rules in the Safe Drinking Water Act.[146] While the impact of this decision was localized to Alabama, it forced the EPA to evaluate its oversight responsibility under the Safe Drinking Water Act for hydraulic fracturing. In 2004, the EPA released a study that concluded the threat to drinking water from hydraulic fracturing was “minimal” and the Energy Policy Act of 2005 exempted fractured wells from being re-classified as injection wells, which would place them under federal regulation under the Safe Drinking Water Act.[95] which was originally intended to regulate disposal wells. The Energy Policy Act of 2005 did not exempt fracturing wells when diesel fuel is used as a component in the fracturing fluid. Some US House members have petitioned the EPA to take a broad interpretation of the definition of "diesel fuel" in order to increase the agency's regulatory power over hydraulic fracturing. They argue that the intent of the current limitation is not to prevent the use of a small subset of diesel compounds, but rather a safety measure to decrease the probability of accidental groundwater contamination with toxic BTEX chemicals (benzene, toluene, ethylbenzene and xylenes) that are present in diesel compounds[147] Congress has been urged to repeal the 2005 regulatory exemption under the Energy Policy Act of 2005.[148] The FRAC Act, introduced in June 2009, would eliminate the exemption and might allow producing wells to be reclassified as injection wells placing them under federal jurisdiction in states without approved UIC programs.

In November 2012, the Centers for Disease Control and Prevention was considering to study a potential link between fracturing and drinking water contamination. Republican House energy leaders advised Department of Health and Human Services (HHS) Secretary Kathleen Sebelius to be cautious in the study. They argued the study, if not properly done, could hinder job growth. They worried that the study could label naturally occurring substances in groundwater as contaminants, that the CDC would limit hydraulic fracturing in the interest of public health, and that the "scientific objectivity of the [HHS] [wa]s being subverted" as the CDC was considering whether or not to study the question.[149][150]

Environmental Protection Agency Administrator Lisa Jackson said the EPA would use its power to protect residents if drillers endangered water supplies and state and local authorities did not take action.[151]

Fracturing Responsibility and Awareness of Chemicals Act[edit]

Congress has been urged to repeal the 2005 regulatory exemption under the Energy Policy Act of 2005 by supporting The FRAC Act, introduced in June 2009, but has so far refused.[148] In June 2009 two identical bills named the Fracturing Responsibility and Awareness of Chemicals Act were introduced to both the United States House and the Senate. The House bill was introduced by representatives Diana DeGette, D-Colo., Maurice Hinchey D-N.Y., and Jared Polis, D-Colo. The Senate version was introduced by senators Bob Casey, D-Pa., and Chuck Schumer, D-N.Y. These bills are designed to amend the Safe Drinking Water Act. This would allow the Environmental Protection Agency to regulate hydraulic fracturing that occurs in states which have not taken primacy in UIC regulation. The bill required the energy industry to reveal what chemicals are being used in the sand-water mixture. The 111th United States Congress adjourned on January 3, 2011, without taking any significant action on the FRAC Act. The FRAC Act was re-introduced in both houses of the 112th United States Congress. In the Senate, Sen. Bob Casey (D-PA) introduced S. 587 on March 15, 2011.[152] In the House, Rep. Diana DeGette (D-CO) introduced H.R. 1084 on March 24, 2011.[153] As of March 2012 Congress had not yet passed either of The FRAC Act bills.[154][155] The oil and gas industry contributes heavily to campaign funds.[156]

Federal lands[edit]

In May 2012, the Department of Interior released updated regulations on fracking, for wells on federal lands. However, Guggenheim Washington Research Group found that only about 5% of the shale wells drilled in the past 10 years were on federal land.[157]

Voluntary disclosure of additives[edit]

In April 2011, the Ground Water Protection Council, in conjunction with the industry, began releasing well-by-well lists of hydraulic fracturing chemicals at [8].[158] Disclosure is still on a voluntary basis; companies are still not required to provide information about their hydraulic fracturing techniques and fluids that they consider to be proprietary.[159] Lists do not include all substances used; a complete listing of the specific chemical formulation of additives used in hydraulic fracturing operations is still not currently made available to landowners, neighbors, local officials, or health care providers, let alone the general public. This practice is under scrutiny.[citation needed] Two studies released in 2009, one by the DOE and the other released by the Ground Water Protection Council, discuss hydraulic fracturing safety concerns.[citation needed] Chemicals which can be used in the fracturing fluid include kerosene, benzene, toluene, xylene, and formaldehyde.[63][160]


Lists provided by companies do not include many radioactive tracers used in hydraulic fracturing,[citation needed] such as antimony-121, antimony-122, antimony-123, antimony-124, antimony-125, Antimony-126, antimony-127, chromium-51, cobalt-57, cobalt-58, cobalt-60, gold-198, iodine-127, iodine-128, iodine-129, iodine-130, iodine-131 (one of the most commonly named in patents of the process, with a half life of 8 days[161]), iridium-192, iron-59, krypton-85, lanthanum-140, potassium-39 (activated to potassium-40), potassium-41 (activated to potassium-42), potassium-43, rubidium-86, scandium-45, scandium-46, scandium-47, scandium-48, silver-110, strontium-85, xenon-133, zinc-65, and zirconium-95. Several are typically combined and injected together.[89][90][91][162] Their half lives range from 40 hours (lanthanum-140) to 10.8 years (krypton-85).[161]

State and local[edit]

The controversy over hydraulic fracturing has led to legislation and court cases over primacy of state regulation versus the rights of local governments to regulate or ban oil and gas drilling. Some states have introduced legislation that limits the ability of municipalities to use zoning to protect citizens from exposure to pollutants from hydraulic fracturing by protecting residential areas. Such laws have been created in Pennsylvania, Ohio,[163] and New York,[164] Colorado, and Texas are battling over related legislation.[165]

Local regulations can be a dominant force in enacting drilling ordinances, creating safety standards and production regulations, and enforcing particular standards. However, in many cases state law can intervene and dominate local law. In Texas, the Railroad Commission of Texas has the authority to regulate certain industries and the specifics of their safety standards and production regulations.[137] In this case, the state determined the zoning, permitting, production, delivery, and safety standards.

In New York, local land use laws are considered in state regulations, and in Pennsylvania, the state's Oil and Gas Act superseded all local ordinances purporting to regulate gas well operations.” [137] Additionally, Los Angeles has recently become the largest city in the US to pass a hydraulic fracturing moratorium.[166]


Hydraulic fracturing conducted at the North Slope and the Kenai Peninsula on the South coast of Alaska. Due to potential harm to the Alaska's fragile environment, there have been hearings for new laws and regulations for this type of oil extraction in Alaska.


In May 2012 the California Senate defeated a bill, introduced by state Sen. Fran Pavley (D-Agoura Hills), requiring drillers to notify local property owners and water authorities in advance that hydraulic fracturing was going to occur, and requiring the testing of groundwater before and after the hydraulic fracturing to determine whether contamination had occurred. Pavley said that this monitoring and reporting approach would help to address citizens' concerns. The state Senate defeated the bill in a bipartisan 18-17 vote.[167]

The California legislature passed Senate Bill 4 to regulate fracking in September 2013. The bill, signed by Governor Jerry Brown, provided for disclosure of chemical used, pre-testing of nearby water wells, and a study on environmental and safety issues.[168] These regulations, which will go into effect on January 1, 2015, require “oil companies to obtain permits for fracking as well as acidizing, the use of hydrofluoric acid and other chemicals to dissolve shale rock.” [169] Democratic Senator Fran Pavley, who introduced the bill, hoped that it would comprehensively regulate and oversee hydraulic fracturing, as well as create transparency for the public.[170] The bill seemed to be a step in the right direction for environmentalists, but some criticized the bill as being too lax.[171] Kassie Siegel of the Center for Biological Diversity said: “SB 4 was amended in the final hours of the legislative session to take it from to a bill that didn’t go far enough to protect Californians from fracking to a bill that actually gave away important protections to oil companies.” [172] Some environmentalists promised not to rest until fracking is banned completely. Oil industry representatives also criticized the bill as too restrictive. The measure was supported by state Sen. Fran Pavley, author of a fracking bill defeated the previous year.[173]

Municipal Level[edit]

Several cities within California are working toward banning or placing strict restrictions on hydraulic fracturing. The two cities most actively fighting fracking are Los Angeles and Beverly Hills. Los Angeles is working toward a moratorium on fracking and Beverly Hills has banned the process altogether.[174]

Beverly Hills[edit]

Beverly Hills has become the first California Municipality to effectively ban hydraulic fracturing. The 21st of April was the initial council meeting in which members voted unanimously to ban fracking in their city. Along with members in the Beverly Hills' council, there were also anti-fracking representatives from other cities hoping to achieve similar outcomes. Environmentalists conclude that there is no safe way to frack and that the process can lead to air and water pollution, as well as an increase in earthquakes. For these reasons, fracking needs to be banned not just regulated. [175]The second and final vote to enact the ban on fracking was held on May 6. The vote was again unanimous, and Beverly Hills became the first city in California to actively ban the technique for extracting natural gas and oil. There were no official plans to implement fracking in Beverly Hills, but the process was taking place in surrounding areas in the Los Angeles county. The ban will take effect on June 6. [176]


In November 2013, voters in three Colorado cities (Boulder, Fort Collins, and Loveland) approved ballot initiatives to impose or extend moratoria on hydraulic fracturing. At the same time, Broomfield voters narrowly defeated an anti-fracking initiative.[177]


Governor Martin O'Malley has issued a hold on applications to drill in western Maryland until the completion of a three-year study of hydraulic fracturing's environmental impacts, thus creating a de facto moratorium on hydraulic fracturing. Del. Heather Mizeur plans to introduce a bill formally banning hydraulic fracturing in Maryland until state officials can determine whether it can be done without harming drinking water or the environment. The gas industry has refused to fund the three-year study and opposed a bill sponsored by Mizeur to fund the study with fees on gas drilling leases. The industry has objected to paying for any studies unless it receives guarantees that it will eventually be able to drill for gas.[178]

New Jersey[edit]

In January 2012 Governor Chris Christie rejected a permanent ban on hydraulic fracturing in New Jersey. The New Jersey Legislature accepted Governor Chris Christie's alternative recommendation for a one-year ban on hydraulic fracturing instead.[179] New Jersey does not have many shale reserves under the ground within its borders.[180] In September 2012 New Jersey Governor Chris Christie vetoed Senate bill (S253) that had passed by a margin of 30-5. The bill would have banned the treatment, discharge, disposal or storage of hydraulic fracturing waste in New Jersey. Pennsylvania sends its waste to New Jersey companies interested in processing and disposing of waste water or "flowback" from hydraulic fracturing within the state.[180] Christie claimed Senate bill (S253) would undercut the state’s ongoing study of fracking, and would discriminate against other states, a violation of the Dormant Commerce Clause of U.S. Constitution.[180]

New York[edit]

The New York State assembly voted 93 to 43, 30 November 2010, to place a moratorium or freeze on hydraulic fracturing to give the state more time to undertake safety and environmental concerns.[181]

In September 2012, the Cuomo administration decided to wait until it completes a review of the potential public health effects of hydraulic fracturing before it allows high-volume hydraulic fracturing in New York. State legislators, medical societies and health experts pressed Joseph Martens, commissioner of the State Department of Environmental Conservation, for an independent review of the health impacts of hydraulic fracturing by medical experts before any regulations are made final and drilling is allowed to start. Martens rejected commissioning an outside study. Instead, he appointed the health commissioner, Dr. Nirav Shah, to assess the department's analysis of the health effects closely and said Shah could consult qualified outside experts for his review.[182]

Municipal lLevel[edit]

At the municipal level, some towns and cities in central New York state have moved to regulate drilling by hydraulic fracturing and its attendant effects, either by banning it within municipal limits, maintaining the option to do so in the future, or banning wastewater from the drilling process from municipal water treatment plants.[183]

New York City. The New York City watershed includes a large area of the Marcellus shale formation. The NYC Dept. of Environmental Protection's position: "While DEP is mindful of the potential economic opportunity that this represents for the State, hydraulic fracturing poses an unacceptable threat to the unfiltered water supply of nine million New Yorkers and cannot safely be permitted with the New York City watershed."[184]

Niagara Falls. Niagara Falls' City Council approved an ordinance that prohibits natural gas extraction in Niagara Falls, as well as the "storage, transfer, treatment or disposal of natural gas exploration and production wastes."[185] Elected officials there said that they didn't want their citizens, who experienced the Love Canal toxic waste crisis firsthand, to be guinea pigs for hydraulic fracturing, the new technology used in gas drilling operations.[185] City council member, Glenn Choolokian said, “We won’t let the temptation of millions of dollars in reward for out-of-town companies, corporations and individuals to be the driving force that puts the health and lives of our children and families at risk from the dangers of hydraulic fracturing and its toxic water. I will not take part in bringing another Love Canal to the City of Niagara Falls.”“Our once great city and all the families of Niagara Falls have been through so much over the years. With Love Canal alive in our memories we aren’t going to allow another environmental tragedy to happen in our city, not today, not ever,” said Glenn Choolokian.[185] Council Chairman Sam Fruscione said he was against selling out future generations of children for corporate greed. Rita Yelda of Food and Water Watch, pointed out that pollutants don't only affect Niagara's citizens, but those in communities downstream as well.[185]


According to the Ohio Department of Natural Resources, approximately 80,000 oil and gas wells in Ohio have been hydraulically fractured since 1951. Ohio does not allow frac flowback or produced brine to be disposed of to surface streams; 98 percent of produced water is injected into Class II disposal wells, the remaining 2 percent is used for dust and ice control on roads, subject to local ordinances.[186]

On May 24, 2012, House of Representatives of Ohio passed Senate Bill 315[187] regulating oil and gas drilling, including hydraulic fracturing. The bill requires companies to test water wells within 1,500 feet (460 m) of proposed drill sites and to report the fluids and chemicals used while drilling and fracking, except for those considered proprietary. Companies will also be required to track wastewater injected into disposal wells.[188] According to John Funk of The Plain Dealer, the bill does not require complete disclosure of all chemicals used during drilling and hydraulic fracturing, and only requires any disclosure of chemicals after the well is already drilled. Proprietary formulas are protected. The Ohio Department of Natural Resources is allowed up to 60 days after drilling to post the chemicals on its web site. Opponents had wanted the bill to require chemicals to be disclosed before drilling so that citizens could have their wells tested for baseline levels of contaminants. The Ohio Senate also removed the requirement for disclosure of drilling lubricants in the space below the local water table but above its final depth. The bill does not give the public the right to appeal a drilling permit, and does not require public notices of permits. The bill allows doctors to reveal the formula only to the patient, family and other doctors solely for the purpose of treatment, not in legal or other proceedings.[189][190]

In May 2013, the Youngstown, Ohio city council turned down a proposed ban on fracking within city limits. The Niles, Ohio city council passed a fracking ban in August 2013, but unanimously rescinded the ban the following month, after testimony from labor union representatives.[191]


Pennsylvania's Act 13 [192] law on the one hand implements a State-wide regulation of hydraulic fracturing with the impact fee and on the other hand enshrines a really low standard of regulation preventing the possibilities for procedural justice and empowerment of local communities on the issue. Firstly, the law harmonizes the conditions for hydraulic fracturing regulations at the state level prohibiting local governments from legislating on the topic. It creates an impact fee for unconventional gas wells which benefits go to local counties and are to be used to tackle the effects of hydraulic fracturing locally. Nevertheless, the law has been widely criticized by environmentalists [193] for it prevents local governments from adopting tougher regulations of hydraulic fracturing activities. Indeed, zoning powers to decide where and when to allow hydraulic fracturing do not belong anymore to local authorities. The Pennsylvania Utility Commission has the power to invalidate any local ordinance conflicting with oil and gas operations. Hydraulic fracturing has to be authorized in all districts, comprising residential areas. Some chemicals are considered by the law as trade secret and information cannot be made public on their health effects. This bill, as well as most state-level regulations of hydraulic fracturing, has henceforth been seen as oriented towards the interests of the hydraulic fracturing industry against growing local concerns.

Marcellus Shale Drilling Permits[edit]

The Marcellus Center at Pennsylvania State University reports that the number of permits issued for wells has increased from 122 in 2007 to 3249 in 2011. The Marcellus Center has posted an animated map of the proliferation of Marcellus Shale Drilling Permits in Pennsylvania. Another map displays both wells and waste processing centers. The bulk of waste from hydraulic fracturing in Pennsylvania is disposed of or used within the state.[194] Not all companies submit reports on production or waste.[194]

In November 2012 the PA DEP was again accused of withholding information about chemicals from hydraulic fracturing fluid that were found in residents' drinking water. The DEP had previously failed to notify residents about hydraulic fracturing related contamination events.[195][196] In 2013, under pressure from the Corbett administration, the PADEP attempted to suppress negative information about the impact of hydraulic fracturing in the state's shade plays from a mandated report on climate change.[4] Members of the Corbett administration wanted all references to a 2011 Cornell University study by Howarth[197][198] removed from the report.[4] Corbett received over a million dollars in campaign contributions from the oil and gas industry.[199][200]

The Marcellus Shale Law (House Bill 1950)[edit]

The Marcellus Shale Law (House Bill 1950)[201] was signed on February 14, 2012, by Governor Tom Corbett.[202] Despite warnings from the EPA about the safety of wastewater,[203] the law changes the zoning laws applicable to Marcellus Shale Well Drilling. The law was slated to take effect in April 2012, but legal challenges from a growing group of Pennsylvania municipalities and organizations led Commonwealth Senior Judge Keith Quigley to order that the implementation of parts of Act 13 be delayed for 120 days.[204] Some of its provisions are that all municipalities must allow Marcellus Shale well drilling (in all zoning districts, including residential and may not limit hours of operation), water and wastewater pits (in all zoning district, including residential), compressor stations (in industrial and agricultural zoning districts and may not limit hours of operation), gas processing plants (in industrial zoning districts and cannot limit hours of operation), and gas pipelines (in all zoning districts, including residential).[201][202] The law helps pave the way for a new pipeline across Pennsylvania to export terminals in Maryland.

The Marcellus Shale Law also contains a provision that allows doctors access to the list of chemicals in hydraulic fracturing fluid in emergency situations, but forbids them from discussing this information with their patients. This provision was added during the last revisions of the bill.[205] Specifically, the bill reads that, "(11) If a health professional determines that a medical emergency exists and the specific identity and amount of any chemicals claimed to be a trade secret or confidential proprietary information are necessary for emergency treatment, the vendor, service provider or operator shall immediately disclose the information to the health professional upon a verbal acknowledgment by the health professional that the information may not be used for purposes other than the health needs asserted and that the 'health professional shall maintain the information as confidential.' The vendor, service provider or operator may request, and the health professional shall provide upon request, a written statement of need and a confidentiality agreement from the health professional as soon as circumstances permit, in conformance with regulations promulgated under this chapter."[201] The bill also says that vendors, service providers, and operators cannot be held responsible for inaccuracy in information that is provided to them, nor do they have to reveal the identities of chemicals that are not disclosed to them, that were not intentionally added to the hydraulic fracturing fluid, that are accidentally present in trace amounts, or are a product of a chemical reaction or process that occurs within the fluid.[201]

The EPA is increasing its oversight regarding investigations of hydraulic fracturing in Pennsylvania,[206][207] which is currently under the administration of pro-drilling Governor Tom Corbett.[208] The New York Times reported that regulations are lax in Pennsylvania.[209] The oil and gas industry is generally left to police itself in the case of accidents. Unannounced inspections are not made by regulators: the companies report their own spills, and create their own remediation plans.[209] A recent review of the state-approved plans found them to appear to be in violation of the law.[209] There are signs of regulatory capture. As noted previously, Corbett received over a million dollars in campaign contributions from the oil and gas industry.[199][200] Ronald Krancer, father of 2012 Pennsylvania DEP Secretary Michael Krancer, donated $25,000 to the State Republican Committee the day before his son was confirmed as the new Department of Environmental Protection Secretary. In addition, Michael Krancer's father contributed $150,000 to Governor Corbett's campaign, tens of thousands to GOP Bob Asher's political action committee and at least $125,000 to the state Republican Party since 2008.[210]


Vermont's Act 152 has banned hydraulic fracturing in the exploitation and exploration of unconventional oil and gas as long as it is not demonstrated that it has no impact on the environment or public health.[211]

Although there has been no oil or gas production or hydraulic fracturing in the state, the Vermont House of Representatives passed a moratorium on hydraulic fracturing in February 2012, and on May 17, 2012 Governor Peter Shumlin (Democrat) signed the law making Vermont the first state to ban hydraulic fracturing.[212][213] On Friday, May 4, 2012, the Vermont legislature voted 103-36 to ban hydraulic fracturing in the state. The bill also requires the state's regulations be revised to prohibit injection well operators from accepting oil and natural gas drilling waste water from out of state.[214]


On June 8, 2010 the Wyoming Oil and Gas Conservation Commission voted to require full disclosure of the hydraulic fracturing fluids used in natural gas exploration.[215][216]

Media and public relations[edit]

The opposition against fracking activities in local townships has led companies to adopt a variety of public relations measures to assuage fears about fracking, including the admitted use of "mil­i­tary tac­tics to counter drilling oppo­nents". At a conference where public relations measures were discussed, a senior executive at Anadarko Petroleum was recorded on tape saying, "Download the US Army / Marine Corps Counterinsurgency Manual, because we are dealing with an insurgency", while referring to fracking opponents. Matt Pitzarella, spokesman for the most important fracking company in Pennsylvania, Range Resources, also told other conference attendees that Range employed psychological warfare operations veterans. According to Pitzarella, the experience learnt in the Middle East has been valuable to Range Resources in Pennsylvania, when dealing with emotionally-charged township meetings and advising townships on zoning and local ordinances dealing with fracking.[217][218] Furthermore, in a February 2012 campaign speech, Rick Santorum, a candidate for the 2012 Republican Party presidential nomination, referred to those objecting to hydraulic fracturing as environmental terrorists.[219]

See also[edit]


a. ^ Also spelled "fraccing"[220] or "fracing".[221]


  1. ^ a b c d e f Montgomery, Carl T.; Smith, Michael B. (2010-12-10). "Hydraulic fracturing. History of an enduring technology" (PDF). JPT Online (Society of Petroleum Engineers): 26–41. Retrieved May 13, 2012. 
  2. ^ Staff. "State by state maps of hydraulic fracturing in US.". Fractracker.org. Retrieved October 19, 2013. 
  3. ^ a b US Dept. of Energy, How is shale gas produced?, Apr. 2013.
  4. ^ a b c d Marie Cusick (August 27, 2013). "DEP Attempted To Suppress Controversial Study That Criticized Shale Gas". State Impact Pennsylvania (NPR). Retrieved October 19, 2013. 
  5. ^ a b c Urbina, Ian (August 3, 2011). "A Tainted Water Well, and Concern There May be More". The New York Times. Retrieved February 22, 2012. 
  6. ^
  7. ^ Watson, T.L., Granites of the southeastern Atlantic states, U.S. Geological Survey Bulletin 426, 1910.
  8. ^ Charlez, Philippe A. (1997). Rock Mechanics: Petroleum Applications. Paris: Editions Technip. p. 239. Retrieved May 14, 2012. 
  9. ^ R.F. Zaffarano and J.D. Lankford, "Petroleum and natural gas," in, Mineral Facts and Problems, 1965, US Bureau of Mines, Bulletin 630, p.673.
  10. ^ US Department of Energy, Hydraulic fracturing technology. Retrieved February 4, 2014.
  11. ^ a b c Ben E. Law and Charles W. Spencer, 1993, "Gas in tight reservoirs-an emerging major source of energy," in David G. Howell (ed.), The Future of Energy Gasses, US Geological Survey, Professional Paper 1570, p.233-252.
  12. ^ C.R. Fast, G.B. Holman, and R. J. Covlin, "The application of massive hydraulic fracturing to the tight Muddy 'J' Formation, Wattenberg Field, Colorado," in Harry K. Veal, (ed.), Exploration Frontiers of the Central and Southern Rockies (Denver: Rocky Mountain Association of Geologists, 1977) 293-300.
  13. ^ Russ Rountree, "Rocky Mountain Oil History," Western Oil Reporter, v.41 n.10, Oct. 1984, p.77.
  14. ^ Robert Chancellor, "Mesaverde hydraulic fracture stimulation, northern Piceance Basin - progress report," in Harry K. Veal, (ed.), Exploration Frontiers of the Central and Southern Rockies (Denver: Rocky Mountain Association of Geologists, 1977) 285-291.
  15. ^ US Environmental Protection Agency, Evaluation of Impacts to Underground Sources of Drinking Water by Hydraulic Fracturing of Coalbed Methane Reservoirs, EPA 816-R-04-003 (2004) p3-11, 5-14.
  16. ^ C.E Bell and others, Effective diverting in horizontal wells in the Austin Chalk, Society of Petroleum Engineers conference paper, 1993.
  17. ^ United States National Research Council, Committee to Review the Gas Research Institute's Research, Development and Demonstration Program, Gas Research Institute (1989). A review of the management of the Gas Research Institute. National Academies. p. ?. 
  18. ^ "US Government Role in Shale Gas Fracking: An Overview"
  19. ^ SPE production & operations 20. Society of Petroleum Engineers. 2005. p. 87. 
  20. ^ The Breakthrough Institute. Interview with Dan Steward, former Mitchell Energy Vice President. December 2011.
  21. ^ "Shale of the century". The Economist (June 2, 2012). Retrieved June 2, 2012. 
  22. ^ Hallibuton, Hydraulic fracturing 101.
  23. ^ REGBLOG A Source of Regulatory News, Analysis, And Opinion in Affiliation with the Penn Program on Regulation [1]
  24. ^ Land & Water: Conserving Natural Resources in Illinois
  25. ^ The Future of Natural Gas: An interdisciplinary MIT Study
  26. ^ US Energy Information Administration, United States Annual Energy Outlook 2012, p.208.
  27. ^ US Energy Information Administration, Natural gas imports
  28. ^ Adam Sieminski, U.S. Energy Outlook, US Energy Information Administration, 14 Mar. 2013, p.12.
  29. ^ Jad Mouwad, Fuel to burn: now what?, New York Times, April 2012.
  30. ^ Fracking pushes US crude output to highest level since 1989, Bloomberg, 11 Sept. 2013.
  31. ^ Danny Fortson (September 11, 2011). "America to be No 1 oil producer". The Sunday Times. Retrieved March 4, 2012. "Goldman Sachs, the investment bank, has predicted that US production will hit 10.9m barrels a day by 2017, a one-third rise over its current level of 8.3m barrels a day. . . . Jeffrey Currie, Goldman's head of commodities, said the reversal of fortune for America was a combination of "technological innovation, as shale technologies developed in gas were applied to oil, and a surge of investment into the US oil industry"." 
  32. ^ Paul Ames (30 May 2013). "Could fracking make the Persian Gulf irrelevant?". GlobalPost via Salon. Retrieved May 30, 2012. 
  33. ^ Rich Miller, Asjylyn Loder and Jim Polson (February 7, 2012). "Americans Gaining Energy Independence With U.S. as Top Producer". Bloomberg. Retrieved February 21, 2012. 
  34. ^ Benoit Faucon and Sarah Kent, "IEA pegs U.S. as top producer by 2020," Wall Street Journal, 12 Nov. 2012.
  35. ^ US EIA, U.S. to become world's leading producer of oil and gas hydrocarbons in 2013, 4 October 2013.
  36. ^ "World Energy Outlook 2011: Are We Entering a Golden Age of Gas?". International Energy Agency. November 9, 2011. Retrieved March 3, 2012. "Based on the assumptions of the GAS Scenario, from 2010 gas use will rise by more than 50% and account for over 25% of world energy demand in 2035—surely a prospect to designate the Golden Age of Gas." 
  37. ^ Polson, Jim, & Haas, Benjamin (January 4, 2012). "Sinopec Group to Buy Stakes in Devon Energy Oil Projects". Bloomberg Businessweek. Retrieved February 4, 2014. 
  38. ^ Carroll, Joe & Polson, Jim (January 9, 2012). "U.S. Shale Bubble Inflates After Near-Record Prices for Untested Fields". Bloomberg Businessweek. Retrieved February 4, 2014. 
  39. ^ Scott, Mark (October 17, 2011). "Norway’s Statoil to Acquire Brigham Exploration for $4.4 Billion". Dealb%k (New York Times). Retrieved March 4, 2012. 
  40. ^ "Production Decline of a Natural Gas Well Over Time". Geology.com. The Geology Society of America. January 3, 2012. Retrieved March 4, 2012. 
  41. ^ Urbina, Ian (June 25, 2011). "Insiders Sound an Alarm Amid a Natural Gas Rush". New York Times. Retrieved June 28, 2011. 
  42. ^ Urbina, Ian (June 27, 2011). "S.E.C. Shift Leads to Worries of Overestimation of Reserves". New York Times. Retrieved June 28, 2011. 
  43. ^ World Bank, Natural Gas Prices, Nov. 2012.
  44. ^ Editorial (February 16, 2012). "Energy Independence Gives Opening for Renewables". Bloomberg. Retrieved February 21, 2012. 
  45. ^ McAllister, Edward (March 7, 2012). "Show, don't tell: U.S. natural gas traders question cuts. North American natural gas producers face one big problem as they pledge to cut production to bolster prices: skeptical traders.". Reuters. Retrieved March 8, 2012. 
  46. ^ a b "LNG Exports Dominion Receives DOE Authorization to Export LNG". Dominion. October 2011. Retrieved March 6, 2012. 
  47. ^ a b c d e Gies, Erica (February 24, 2012). "Push to Export Natural Gas Could Threaten U.S. Energy Security". Green Tech (Forbes). Retrieved February 4, 2014. 
  48. ^ a b Rascoe, Ayesha (February 7, 2012). "Sierra Club opposes Maryland LNG export terminal". Reuters. Retrieved February 4, 2014. 
  49. ^ "$1B natural gas pipeline proposed for Pa., would connect to Baltimore, DC areas". Associate Press. March 2, 2012. Retrieved March 6, 2012. [dead link]
  50. ^ Barnhardt, Laura (April 19, 2006). "Firm to hold meetings on LNG pipeline plan". Baltimore Sun. Retrieved March 6, 2012. 
  51. ^ Prezioso, Jeanine (July 28, 2011). "Analysis: U.S. shale gas sector girds for next battle: pipeline". Reuters. Retrieved March 6, 2012. 
  52. ^ Barnhardt, Laura (August 12, 2008). "Information sessions on LNG pipeline Federal officials to meet with property owners about route (correction)". Baltimore Sun. Retrieved March 4, 2012. 
  53. ^ a b c "Hydraulic Fracturing Study Plan Draft 2011". Environmental Protection Agency's Hydraulic Fracturing Study Plan Draft 2011. Environmental Protection Agency. Retrieved May 3, 2011. 
  54. ^ Ian Urbina and Jo Craven McGinty (December 1, 2011). "Learning Too Late of the Perils in Gas Well Leases". The New York Times. Retrieved February 23, 2012. 
  55. ^ Ian Urbina (October 19, 2011). "Rush to Drill for Natural Gas Creates Conflicts With Mortgages". The New York Times. Retrieved February 23, 2012. 
  56. ^ Ian Urbina (November 24, 2011). "Officials Push for Clarity on Oil and Gas Leases". The New York Times. Retrieved February 23, 2012. 
  57. ^ a b Mary Esch and Rik Stevens (July 13, 2012). "U.S. insurer won't cover gas drill fracking exposure". Associated Press. Retrieved July 14, 2012. 
  58. ^ Mark Williams (July 14, 2012). "Insurers deny drilling claims Nationwide continues policy of not covering policyholders for damage from ‘fracking’". The Columbus Dispatch. Retrieved July 14, 2012. 
  59. ^ Colorado Division of water Resources, Library: "Water Sources and Demand for the Hydraulic Fracturing of Oil and Gas Wells in Colorado from 2010 through 20151", undated.
  60. ^ Marcellus Shale Advisory Commission, Final report, Pennsylvania Department of Environmental Protection, 22 July 2011.
  61. ^ Texas Railroad Commission, Report to the Texas Senate.
  62. ^ Texas Railroad Commission, Press release, 26 Jan. 2012.
  63. ^ a b "Chemicals Used in Hydraulic Fracturing". Committee on Energy and Commerce U.S. House of Representatives. April 18, 2011. 
  64. ^ a b Brown, Valerie J. (February 2007). "Industry Issues: Putting the Heat on Gas". Environmental Health Perspectives (115(2)) (US National Institute of Environmental Health Sciences). 
  65. ^ "Incidents where hydraulic fracturing is a suspected cause of drinking water contamination". U.S. NRDC. December 2011. Retrieved February 23, 2012. 
  66. ^ Ian Urbina (March 3, 2011). "Pressure Limits Efforts to Police Drilling for Gas". The New York Times. Retrieved February 23, 2012. 
  67. ^ David Biello (March 30, 2010). "What the Frack? Natural Gas from Subterranean Shale Promises U.S. Energy Independence--With Environmental Costs". Scientific American. Retrieved February 21, 2012. 
  68. ^ Daphne Wysham (February 6, 2012). "Fracking Perils: A Dangerous Misstep on the Road to U.S. Energy Independence". Common Dreams. Retrieved February 22, 2012. 
  69. ^ a b c d Ramanuja, Krishna (March 7, 2012). "Study suggests hydrofracking is killing farm animals, pets". Cornell Chronicle Online. Cornell University. Retrieved March 9, 2012. 
  70. ^ "Chapter 5 Natural Gas Development Activities And High‐Volume Hydraulic Fracturing". New York Department of Environmental Conservation. June 2010. 
  71. ^ Hass, Benjamin (14 August 2012). "Fracking Hazards Obscured in Failure to Disclose Wells". Bloomberg News. Retrieved March 27, 2013. 
  72. ^ Soraghan, Mike (13 December 2013). "White House official backs FracFocus as preferred disclosure method". E&E News. Retrieved March 27, 2013. 
  73. ^ "Colorado Sets The Bar on Hydraulic Fracturing Chemical Disclosure". Environmental Defense Fund. Retrieved March 27, 2013. 
  74. ^ Maykuth, Andrew (22 January 2012). "More states ordering disclosure of fracking chemicals.". Philadelphia Inquirer. Retrieved March 27, 2013. 
  75. ^ Grant, Alison (4 April 2013). "FracTracker monitors shale development in Ohio". The Plain Dealer. Retrieved July 28, 2013. 
  76. ^ Staff. "FracTracker. Exploring data, sharing perspectives, and mapping impacts of the gas industry". FracTracker. Retrieved July 28, 2013. 
  77. ^ a b "Pa. health care company seeks gas drilling facts : Carbon County Groundwater Guardians". Carbonwaters.org. May 20, 2012. Retrieved August 15, 2012. 
  78. ^ Burdeau, Cain. "EPA to Study 'Fracking' Gas Drilling Method." Associated Press. March 18, 2010.
  79. ^ Environmental and Energy Study Institute. "Transatlantic Perspectives on Shale Gas Development". 
  80. ^ U.S. EPA. "Case Study Locations for Hydraulic Fracturing Study". 
  81. ^ Ikeda, Robin (April 26, 2013). "Review of Federal Hydraulic Fracturing Research Activities. Testimony before the Subcommittees on Energy and Environment Committee on Science, Space and Technology U.S. House of Representatives.". CDC web site. US Center for Disease Control and Prevention. Retrieved May 11, 2013. 
  82. ^ a b c DiCosmo, Bridget (May 15, 2012). "SAB Pushes To Advise EPA To Conduct Toxicity Tests In Fracking Study". InsideEPA. US Environmental Protection Agency. Retrieved May 19, 2012. "But some members of the chartered SAB are suggesting that the fracking panel revise its recommendation that the agency scale back its planned toxicity testing of chemicals used in the hydraulic fracturing, or fracking, process, because of the limited resources and time frame...Chesapeake Energy supported the draft recommendation, saying that “an in-depth study of toxicity, the development of new analytical methods and tracers are not practical given the budget and schedule limitation of the study.”" 
  83. ^ Deborah L. Swackhamer and David Dzomback, SAB review of EPA's draft hydraulic fracturing study plan, 4 Aug. 2011.
  84. ^ Satterfield, John (June 30, 2011). "Letter from Chesapeake Energy to EPA". InsideEPA. US Environmental Protection Agency. Retrieved May 19, 2012. 
  85. ^ Timothy A. Bartrand and Jeffrey S. Rosen (October 2013). Potential Impacts and Significance of Elevated 131 I on Drinking Water Sources [Project #4486ORDER NUMBER: 4486] (Report). Water Research Foundation. http://www.waterrf.org/ExecutiveSummaryLibrary/4486_ProjectSummary.pdf. Retrieved November 11, 2013.
  86. ^ Jeff McMahon (April 10, 2011). "EPA: New Radiation Highs in Little Rock Milk, Philadelphia Drinking Water". Forbes. Retrieved February 22, 2012. 
  87. ^ "Japanese Nuclear Emergency: Radiation Monitoring". EPA. June 30, 2011. Retrieved February 23, 2012. 
  88. ^ Sandy Bauers (July 21, 2011). "Cancer patients’ urine suspected in Wissahickon iodine-131 levels". Philadelphia inquirer, Carbon County Groundwater Guardians. Retrieved February 25, 2012. 
  89. ^ a b [2] Scott III, George L. (03-June-1997) US Patent No. 5635712: Method for monitoring the hydraulic fracturing of a subterranean formation. US Patent Publications.
  90. ^ a b [3] Fertl; Walter H. (15-Nov-1983) US Patent No. US4415805: Method and apparatus for evaluating multiple stage fracturing or earth formations surrounding a borehole. US Patent Publications.
  91. ^ a b [4] Scott III, George L. (15-Aug-1995) US Patent No. US5441110: System and method for monitoring fracture growth during hydraulic fracture treatment. US Patent Publications.
  92. ^ Draft Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources
  93. ^ "Hydraulic Fracturing". EPA's Draft Hydraulic Fracturing Study Plan. Environmental Protection Agency. Retrieved April 6, 2011. 
  94. ^ Horwitt, Dusty (August 3, 2011). "Cracks in the Facade: 25 Years Ago, EPA Linked "Fracking" to Water Contamination" (PDF). Environmental Working Group. http://static.ewg.org/reports/2011/fracking/cracks_in_the_facade.pdf. Retrieved August 3, 2011.
  95. ^ a b c "Does Natural-Gas Drilling Endanger Water Supplies?". BusinessWeek. November 11, 2008. 
  96. ^ "Evaluation of Impacts to Underground Sources of Drinking Water by Hydraulic Fracturing of Coalbed Methane Reservoirs; National Study Final Report" (PDF). Retrieved July 13, 2011. 
  97. ^ Michael Rubinkam, Pa. regulators shut down Cabot drilling, April 15, 2010, pressconnects.com
  98. ^ Lustgarten, Abrahm (November 20, 2009). "Pa. Residents Sue Gas Driller for Contamination, Health Concerns". Pro Publica. Retrieved February 4, 2014. 
  99. ^ a b Fetzer, Richard M. (January 19, 2012). Action Memorandum - Request for funding for a Removal Action at the Dimock Residential Groundwater Site (Report). http://www.epaosc.org/sites/7555/files/dimock-action-memo-01-19-12%5B1%5D.pdf. Retrieved May 27, 2012.
  100. ^ Legere, Laura. "Gas company slapped with drilling ban and fine". The Times Tribune. Retrieved May 8, 2011. 
  101. ^ "EPA Releases Draft Findings of Pavillion, Wyoming Ground Water Investigation for Public Comment and Independent Scientific Review" (Press release). EPA. December 8, 2011. Retrieved February 27, 2012. 
  102. ^ a b DiGiulio, Dominic C.; Wilkin, Richard T.; Miller, Carlyle; Oberley, Gregory (December 2011) (PDF). Investigation of Ground Water Contamination near Pavillion, Wyoming. Draft (Report). Environmental Protection Agency. http://www.epa.gov/region8/superfund/wy/pavillion/EPA_ReportOnPavillion_Dec-8-2011.pdf. Retrieved March 23, 2012.
  103. ^ Susan Phillips (December 8, 2011). "EPA Blames Fracking for Wyoming Groundwater Contamination". StateImpact Penn­syl­va­nia. WITF, WHYY & NPR. Retrieved February 6, 2012. 
  104. ^ Mead Gruver (September 27, 2012). "New Data, but Not Much New in Wyo. Fracking Study". Associated Press. Retrieved September 30, 2012. 
  105. ^ a b Mark Drajem (September 27, 2012). "Diesel in Water Near Fracking Confirms EPA Tests Wyoming Disputes". Bloomberg News. Retrieved September 28, 2012. 
  106. ^ US EPA, Region 8, Wyoming to Lead Further Investigation of Water Quality Concerns Outside of Pavillion with Support of EPA, 20 June 2013.
  107. ^ a b Urbina, Ian (April 16, 2011). "Chemicals Were Injected Into Wells, Report Says". New York Times. Retrieved May 2, 2011. 
  108. ^ "CHEMICALS USED IN HYDRAULIC FRACTURING". US House of Representatives. April 2011. Retrieved December 14, 2011. 
  109. ^ "Documents: Natural Gas's Toxic Waste". New York Times. February 26, 2011. Retrieved May 2, 2011. 
  110. ^ a b c Osborn, S. G.; Vengosh, A.; Warner, N. R.; Jackson, R. B. (2011). "Methane contamination of drinking water accompanying gas-well drilling and hydraulic fracturing". Proceedings of the National Academy of Sciences 108 (20): 8172. doi:10.1073/pnas.1100682108.  edit
  111. ^ "Shale gas drilling 'contaminates drinking water'". BBC News. May 9, 2011. 
  112. ^ Lustgarten, Abraham. "Scientific Study Links Flammable Drinking Water to Fracking". Propublica. Retrieved May 10, 2011. 
  113. ^ Lustgarten, Abrahm. "Scientific Study Links Flammable Drinking Water to Fracking". propublica. Retrieved May 11, 2011. 
  114. ^ Richard A. Kerr (May 13, 2011). "Study: High-Tech Gas Drilling Is Fouling Drinking Water". Science Now 332: 775. Retrieved June 27, 2011. 
  115. ^ Holzman, David. "Methane Found in Well Water Near Fracking Sites". Environmental Health Perspectives. Retrieved February 14, 2012. 
  116. ^ "Battlement Mesa HIA/EHMS". Garfield County. Retrieved May 11, 2011. 
  117. ^ "MLaw Receives Grant from National Sea Grant Law Center". Law.umich.edu. May 17, 2011. Retrieved July 13, 2011. 
  118. ^ Meyers, T. (April 17, 2012). "Potential Contaminant Pathways from Hydraulically Fractured Shale to Aquifers". Ground Water (National Ground Water Association) (Wiley). doi:10.1111/j.1745-6584.2012.00933.x. Retrieved February 4, 2014. 
  119. ^ Efstathiou, Jim (May 3, 2012). "Fracking Fluids May Migrate to Aquifers, Researcher Says". Bloomberg. Retrieved May 4, 2012. 
  120. ^ a b Rubinkam M, Esch M. (September 10, 2010). Lawsuit: Gas drilling fluid ruined Pennsylvania water wells. AP.
  121. ^ Michaels C, Simpson JL, Wegner W. (2010). Fractured Communities: Case Studies of the Environmental Impacts of Gas Drilling. Riverkeeper.
  122. ^ Gas eruption fallout, The River Reporter, June 10–16, 2010
  123. ^ Anya Litvak, Marcellus Shale well blowout prompts second DEP suspension, Pittsburgh business Times, June 9, 2010.
  124. ^ Casselman, Ben (August 13, 2009). "Wastewater Disposal Well May Have Caused Texas Earthquakes". Wall Street Journal. Retrieved May 8, 2011. 
  125. ^ "Drilling Might Be Culprit Behind Texas Earthquakes". Associated Press. June 12, 2009. 
  126. ^ "Fracking Disposal Wells Linked to Earthquakes, Banned in Arkansas". September 16, 2011. 
  127. ^ Joyce, Christopher, How Fracking Wastewater Is Tied To Quakes, National Public Radio, January 5, 2012.
  128. ^ McHaney, Sarah (October 21, 2012). "Shale Gas Extraction Brings Local Health Impacts". IPS News (Inter Press Service). Retrieved October 21, 2012. 
  129. ^ "Oil and Gas Air Pollution". Earthworks. Retrieved May 8, 2011. [unreliable source]
  130. ^ Hanson, Hilary (January 12, 2013). "WATCH: Home Has Flammable Tap Water". Huffington Post. 
  131. ^ a b http://www.ohio.com/news/state-says-methane-in-portage-county-water-well-is-naturally-occurring-not-from-drilling-1.444624
  132. ^ Eric Esswein, MSPH; Max Kiefer, MS; John Snawder, PhD; and Michael Breitenstein, BS (23 May 2012). "Worker Exposure to Crystalline Silica During Hydraulic Fracturing". NIOSH Science Blog. United States Center for Disease Control. Retrieved September 8, 2012. 
  133. ^ OSHA/NIOSH (2012). OSHA/NIOSH Hazard Alert. Worker Exposure to Silica during Hydraulic Fracturing. United States Department of Labor, Occupational Safety and Health Administration. Retrieved September 8, 2012. 
  134. ^ Gayle Nicoll (October 1, 2012). Radiation Sources in Natural Gas Well Activities. More attention and monitoring of occupational radiation exposure in the natural gas industry are warranted. Occupational Health and Safety. Retrieved October 6, 2012. 
  135. ^ Associated Press (June 27, 2011). "Company sues W.Va town over drilling ban". Bloomberg Businessweek. Retrieved June 28, 2011. 
  136. ^ Pless, Jacquelyn. "Fracking Update: What States Are Doing to Ensure Safe Natural Gas Extraction". Retrieved February 21, 2012. 
  137. ^ a b c d Negro, Sorrell E. (February 2012). "Fracking Wars: Federal, State, and Local Conflicts over the Regulation of Natural Gas Activities" (PDF). Zoning and Planning Law Report (Thomson Reuters) 35 (2): 1–14. Retrieved 2014-05-01. 
  138. ^ a b Kiparsky, Michael; Hein, Jayni Foley (April 2013). "Regulation of Hydraulic Fracturing in California: A Wastewater and Water Quality Perspective" (PDF). University of California Center for Law, Energy, and the Environment. Retrieved 2014-05-01. 
  139. ^ a b c d e Freeman, Jody (July 5, 2012). "The Wise Way to Regulate Gas Drilling". New York Times. Retrieved October 19, 2012. 
  140. ^ a b c Eggert, David (October 19, 2012). "Yes or No? Obama, Romney answer 'fracking' question". Retrieved October 19, 2012. 
  141. ^ Karlin, Rick (July 31, 2012). "Gas drilling firm threatens to sue over potential frack bans". Retrieved October 19, 2012. 
  142. ^ Nicholson, Barclay; Blanson, Kadian (December 5, 2012). "Trends emerge on hydraulic fracturing litigation". Retrieved October 19, 2012. 
  143. ^ State Review of Oil and Gas Environmental Regulations, home page
  144. ^ a b c d Davis C and Hoffer K "Federalizing energy? Agenda change and the politics of tracking", Policy Science, Volume 45, September 2012
  145. ^ [5], Environmental Protection Agency
  146. ^ "Did the 11th Ciurcuit Crack "Frac"? – Hydraulic Fracturing after the Court’s Landmark LEAF Decision". Virginia Environmental Law Journal 18 (4). 1999. 
  147. ^ Letter from Representatives Henry A. Waxman, Edward J. Markey, Diana DeGette, and Rush Holt to EPA Administrator Lisa Jackson, 8 August 2011
  148. ^ a b Mulkern, Anne C. (May 7, 2009). "Industry campaign targets 'hydraulic fracturing' bill". The New York Times. Retrieved May 4, 2010. 
  149. ^ Colman, Zack (November 30, 2012). "GOP lawmakers say fracking study could hurt job growth". The Hill (E2 Wire). Retrieved February 4, 2014. 
  150. ^ Staff (30 November 2012). "Lawmakers fear Kathleen Sebelius taking aim at natural gas boom". Beltway Confidential (The Examiner). Retrieved December 1, 2012. 
  151. ^ Wayne, Alex; Klimasinska, Katarzyna (January 4, 2012). "Health Effects of Fracking for Natural Gas Need Study, Says CDC Scientist". Bloomberg. Retrieved February 4, 2014. 
  152. ^ H.R. 1084: S. 587: FRAC Act
  153. ^ H.R. 1084: Fracturing Responsibility and Awareness of Chemicals Act of 2011
  154. ^ "H.R. 1084: Fracturing Responsibility and Awareness of Chemicals Act of 2011". GovTrack.us. Retrieved March 9, 2012. 
  155. ^ "S. 587: FRAC Act". GovTrack.us. Retrieved March 9, 2012. 
  156. ^ "Oil & Gas: Money to Congress". OpenSecrets.org. Retrieved March 9, 2012. 
  157. ^ U.S. proposes new rules for fracking on federal lands. Reuters.
  158. ^ Litvak, Anya (20 April 2011). "A new home for Marcellus Shale frac water". 
  159. ^ Mireya Navarro (12 July 2011). "Fracking Water Killed Trees, Study Finds". Green (The New York Times). Retrieved February 22, 2012. 
  160. ^ Draft Supplemental Generic Environmental Impact Statement. Chapter 5 Natural Gas Development Activities And High‐Volume Hydraulic Fracturing.
  161. ^ a b Unterweger, MP; Hoppes, DD; Schima FJ; Coursey JS (April 2003). "Radionuclide Half-Life Measurements". Physical Measurement Laboratory. NIST. Retrieved December 10, 2012. 
  162. ^ [6] Gadeken, Larry L., Halliburton Company (08-Nov-1989) Patent EP0340956A1: Radioactive well logging method.
  163. ^ Suddes, Thomasn (January 14, 2012). "'Fracking' debate exposes weaknesses in Ohio Statehouse – term limits and the death of home rule". The Plain Dealer. Retrieved March 26, 2012. 
  164. ^ "Recent Court Decisions May Affect Hydraulic Fracturing in New York and Ohio". The National Law Review. McDermott Will & Emery. April 1, 2012. Retrieved July 3, 2012. 
  165. ^ Tavernise, Sabrina (December 14, 2011). "As Gas Drilling Spreads, Towns Stand Ground Over Control Applied". The New York Times. Retrieved March 26, 2012. 
  166. ^ "Motion for a fracking moratorium"
  167. ^ Hiltzik, Michael (9 June 2012). "Let's close the information gap about fracking. The oil and gas industry wanted to withhold information even from regulators about the exact formulation of the fluids injected into the ground during fracking, calling them trade secrets.". Los Angeles Times. Retrieved June 9, 2012. 
  168. ^ California lawmakers approve fracking bill, NBC Bay Area, 12 Sept. 2013.
  169. ^ Bernstein, Sharon. "California Fracking Bill Signed Into Law By Governor Jerry Brown." The Huffington Post. TheHuffingtonPost.com, 21 Sept. 2013. Web. 02 Mar. 2014. <http://www.huffingtonpost.com/2013/09/21/california-fracking-bill_n_3965069.html>
  170. ^ Stock, Stephen. "California Fracking Law Has Huge Holes, Critics Argue." NBC Bay Area. National Broadcasting Company, 13 Sept. 2013. Web. 02 Mar. 2014. <http://www.nbcbayarea.com/news/california/California-Fracking-Law-Has-Huge Holes-Critics-Argue-223556411.html>
  171. ^ Mark Melincoe, Brown says he'll sign California bill regulating fracking, Bloomberg, 12 Sept, 2013.
  172. ^ Stock, Stephen. "California Fracking Law Has Huge Holes, Critics Argue." NBC Bay Area. National Broadcasting Company, 13 Sept. 2013. Web. 02 Mar. 2014. <http://www.nbcbayarea.com/news/california/California-Fracking-Law-Has-Huge Holes-Critics-Argue-223556411.html>
  173. ^ Stephen Stock, California fracking law has huge holes, critics argue, NBC Bay Area, 13 Sept. 2013
  174. ^ Feldman, Dana. "Beverly Hills Bans Fracking; First City In California To Do So." Huffington Post 7 May 2014. Web. 14 May 2014. <http://www.huffingtonpost.com/2014/05/07/beverly-hills-bans-fracking_n_5277953.html>.
  175. ^ O'Connor, Lydia. "California City Becomes First to Vote to Ban Fracking." Huffington Post 24 Apr. 2014. Web. 14 May 2014. <http://www.huffingtonpost.com/2014/04/24/beverly-hills-fracking-ban_n_5208377.html>.
  176. ^ Feldman, Dana. "Beverly Hills Bans Fracking; First City In California To Do So." Huffington Post 7 May 2014. Web. 14 May 2014. <http://www.huffingtonpost.com/2014/05/07/beverly-hills-bans-fracking_n_5277953.html>.
  177. ^ Streeja VN, "Three Colorado Cities Vote In Favor Of Anti-Fracking Measures, While Initiative Fails In Broomfield By 194 Votes", International Business Times, 6 Nov. 2013
  178. ^ Wheeler, Tim (September 12, 2012). "Greens urge 'fracking' ban in Maryland. Lawmaker vows to bar controversial gas drilling until impact studies done". Baltimore Sun. Retrieved February 4, 2014. 
  179. ^ "New Jersey Fracking Ban: Gov. Chris Christie's 1-Year Recommendation Accepted By Lawmakers". The Huffington Post. 10 January 2012. Retrieved 13 November 2013. 
  180. ^ a b c Jim, Malewitz (24 September 2012). "In New Jersey, Christie Vetoes Anti-Fracking Bill". Stateline. The Daily News Service of The Pew Charitable Trusts. Retrieved 13 November 2013. 
  181. ^ Navarro, Mireya (30 November 2010). "N.Y. Assembly Approves Fracking Moratorium". The New York Times Company. 
  182. ^ Navarro, Mireya (20 September 2012). "New York State Plans Health Review as It Weighs Gas Drilling". The New York Times Company. 
  183. ^
  184. ^ [7] NYC DEP, 2011
  185. ^ a b c d Gerken, James (March 6, 2012). "Niagara Falls: Drilling Wastewater Won't Be Treated Here". Huffington Post. Associated Press. Retrieved March 8, 2012. 
  186. ^ James Zehringer, Testimony to the Ohio House of Representatives, 16 May 2013.
  187. ^ "Ohio Senate Bill 315". May 24, 2012. Retrieved June 9, 2012. 
  188. ^ "Ohio passes drilling regulation bill". Upstream Online (NHST Media Group). May 25, 2012. Retrieved May 28, 2012. 
  189. ^ John Funk (May 24, 2012). "Ohio lawmakers race to finish shale gas regulations despite complaints from environmentalists". Cleveland Plain Dealer (Cleveland Plain Dealer). Retrieved June 9, 2012. 
  190. ^ John Funk (May 20, 2012). "Gov. John Kasich’s proposed fracking law is riddled with loopholes, say environmental groups". Cleveland Plain Dealer (Cleveland Plain Dealer). Retrieved June 9, 2012. 
  191. ^ Jordan Cohen, Niles council rescinds ban on fracking ordinance, Vindy, 19 Sept. 2013.
  192. ^ "Pennsylvania Act 13 (HB 1950)"
  193. ^ "The impact of Act 13 (HB 1950) on Pennsylvania's People and Communities", Marcellus Outreach Butler
  194. ^ a b Matt Kelso (August 20, 2013). "PA Releases Unconventional Production and Waste Data". StateImpact Pennsylvania. Fractracker.org. Retrieved October 19, 2013. 
  195. ^ Susan Phillips (2 November 2012). "DEP Employee Says Agency Withholds Water Contamination Information from Residents". StateImpact Pennsylvania. NPR. Retrieved November 10, 2012. 
  196. ^ David Caruso (2011-01-03). "44,000 Barrels of Tainted Water Dumped Into Neshaminy Creek. We're the only state allowing tainted water into our rivers". NBC Philadelphia. Associated Press. Retrieved April 28, 2012. 
  197. ^ Howarth, Robert W.; Santoro, Renee; Ingraffea, Anthony (13 March 2011). "Methane and the greenhouse-gas footprint of natural gas from shale formations" (PDF). Climatic Change (Springer) 106 (4): 679–690. doi:10.1007/s10584-011-0061-5. Retrieved May 7, 2012. 
  198. ^ Howarth, Robert W.; Ingraffea, Anthony (15 September 2011). "Should Fracking Stop? Extracting gas from shale increases the availability of this resource, but the health and environmental risks may be too high. Point: Yes, it's too high risk". Nature (477): 271–275. doi:10.1038/477271a. 
  199. ^ a b Bill McKibben (March 8, 2012). "Why Not Frack?". The New York Review of Books 59 (4). Retrieved February 21, 2012. 
  200. ^ a b Don Hopey (February 24, 2011). "Corbett repeals policy on gas drilling in parks". Pittsburgh Post-Gazette. Retrieved March 7, 2012. 
  201. ^ a b c d Pennsylvania House bill 1950
  202. ^ a b "Local zoning provisions in Pa.'s gas drilling law". USA Today. Associated Press. March 3, 2012. Retrieved February 23, 2012. 
  203. ^ Conrad D. Volz, Kyle Ferrar, Drew Michanowicz, Charles Christen, Shannon Kearney, Matt Kelso, and Samantha Malone (March 28–29, 2011). "Contaminant Characterization of Effluent from Pennsylvania Brine Treatment Inc., Josephine Facility:Implications for Disposal of Oil and Gas Flowback Fluids from Brine Treatment Pollutants". EPA Hydraulic Fracturing Study Technical Workshop 3, Fate and Transport. Retrieved February 4, 2014. 
  204. ^ Susana G. Baumann (July 20, 2012). Fracking regulations, a legal battle in Pennsylvania. VOXXI News. Retrieved July 21, 2012. 
  205. ^ Sheppard, Kate (March 23, 2012). "For Pennsylvania's Doctors, a Gag Order on Fracking Chemicals. A new provision could forbid the state’s doctors from sharing information with patients exposed to toxic fracking solutions.". Mother Jones. Retrieved March 23, 2012. 
  206. ^ "The EPA Says Pennsylvania Is Screwing Up The Fracking Investigating And It's Taking Over". Associate Press. March 6, 2012. Retrieved May 11, 2013. 
  207. ^ "EPA heightens scrutiny over Pa. gas drilling". Fox News. March 5, 2012. Retrieved May 11, 2013. 
  208. ^ "Pennsylvania DEP Secretary Defends States' Ability to Regulate Hydraulic Fracturing". PR Newswire. November 17, 2011. 
  209. ^ a b c Ian Urbina (February 26, 2011). "Regulation Lax as Gas Wells' Tainted Water Hits Rivers". The New York Times. Retrieved February 22, 2012. 
  210. ^ Olson, Laura (Post-Gazette Harrisburg Bureau) (July 7, 2011). "Dad's donation riles state Democrats: Father of DEP secretary gave $25,000 to GOP on the eve of his confirmation by Pennsylvania Senate". Pittsburgh Post-Gazette. Retrieved March 7, 2012. 
  211. ^ "Vermont Act 152"
  212. ^ "Vermont becomes first state to ban fracking". Fox News. May 17, 2012. Retrieved August 15, 2012. 
  213. ^ CNN Wire Staff (May 17, 2012). "Vermont first state to ban fracking". CNN. Retrieved June 9, 2012. 
  214. ^ White, Rodney (May 4, 2012). "Vermont legislature votes 103-36 to ban hydraulic fracturing". Washington (Platts). Retrieved May 4, 2012. 
  215. ^ David O. Williams, oil and gas regulators approve new rules for frack fluid disclosure, June 8, 2010, The Colorado Independent.
  216. ^ Wyoming approves 'fracking' disclosure rules , June 9, 2010, trib.com
  217. ^ Javers, Eamon (November 8, 2011). "Oil Executive: Military-Style 'Psy Ops' Experience Applied". CNBC. 
  218. ^ Phillips, Susan (November 9, 2011). "‘We’re Dealing with an Insurgency,’ says Energy Company Exec of Fracking Foes". National Public Radio. 
  219. ^ Adam Aigner-Treworgy (February 9, 2012). "Santorum takes on 'environmental terror'". CNN. Retrieved February 24, 2012. 
  220. ^ "Chemicals that may be used in Australian CSG fraccing fluid" Australian Petroleum Ptoduction & Exploration Association Limited
  221. ^ "Will The EPA Crack Down On 'Fracking'?", Investopedia

Further reading[edit]

External links[edit]

Government links[edit]

Anti-fracking groups[edit]

Industry groups[edit]

Other NGOs[edit]

News links[edit]